Coaxial Centering Indicator
#1
I bought one of those coaxial centering indicators at least ten years ago from Little Machine Shop. Never used it until today. I'm sure glad that I had it because I had to center on a couple of holes I drilled in a piece of steel but I didn't have a reamer to ream to final size. The drill rod didn't fit the drilled holes so I had to enlarge them somehow. I tried setting them up in the 4-jaw chuck but since I hadn't squared the stock up, keyway stock, the holes weren't exactly at right angles to the adjacent sides. I looked into buying the proper reamers but 5/8" & 3/4" reamers are expensive.  Yikes

Time to christen the boring head. But alas, I did not have a boring bar that would fit it so I ordered one from McMaster. It arrived today so I used the coaxial centering indicator to center up on the holes and bored them out. I screwed up the first one because I forgot to lock the head after adjusting the height so the hole turned out a bit sloppy on the drill rod but I think it'll work. If not, I'll have to make a new one.  Bash

Ed

         
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#2
funny...i used mine for the first time today as well! And I also bought mine from LMS about 10 years ago.
It might have been one of their monthly specials or something.
Retired old guy finally living the dream and enjoying life to the fullest!!!
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#3
I got mine from Enco years ago and have used it quite a bit. Much faster (for me) to center up with compared to using a DTI. Super helpful for locating the original center of a wallowed out threaded hole with the aid of a gauge pin. Great tool to have.
Willie
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#4
yep...I think I will be using it a lot more now.
I've been using the Haimer 3D taster and the DRO till now.
Retired old guy finally living the dream and enjoying life to the fullest!!!
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#5
And Ed will be designing a box to hold his indicator.
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#6
Rotfl

Not this time. I bought it long enough ago that it came in a nice wooden box rather than a POS injection molded box.

Ed

         
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